| http://www.w3.org/ns/prov#value | - When we try to explain the first appearance of a new organ such as an eye (there was a time when there were no eyes according to theory), when we try to explain the first appearance of a heart (there was a time when there were no hearts), when we try to explain the first appearance of an ear (there was a time when there were no ears), when we try to explain the first appearance of a leg, or a lung
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